Fixed compatibility with PHPUnit 4.1

[mhujer]

This fixes compatibility with PHPUnit 4.1 as the Constraint interface was changed in sebastianbergmann/phpunit@f0322b6#diff-16

Declaration of Zend_Test_PHPUnit_Constraint_Redirect::fail() should be compatible with 
PHPUnit_Framework_Constraint::fail($other, $description, SebastianBergmann\Comparator\ComparisonFailure $comparisonFailure = NULL)

Declaration of Zend_Test_PHPUnit_Constraint_ResponseHeader::fail() should be compatible with 
PHPUnit_Framework_Constraint::fail($other, $description, SebastianBergmann\Comparator\ComparisonFailure $comparisonFailure = NULL)

Declaration of Zend_Test_PHPUnit_Constraint_DomQuery::fail() should be compatible with 
PHPUnit_Framework_Constraint::fail($other, $description, SebastianBergmann\Comparator\ComparisonFailure $comparisonFailure = NULL)

The compatibility with previous and new PHPUnit versions is accomplished through conditional include of constraint with proper interface. (DomQuery41.php, Redirect41.php and ResponseHeader41.php are just copies of respective *37.php files with fail() method interface changed)